Why was john c. calhoun opposed to the tariffs of 1828 and 1832?
a.) he believed that states were bound to obey all federal laws, even if they seemed unfair.
b.)he wanted to raise the price of imported goods.
c.)he believed that it was unfair to support one region at the expense of another.
d.)he felt the tariffs were not raised high enough.

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

Adesert is an example of a(n) and the gobi desert is an example of a(n) a. ecosystem biome b. biome ecosystem c. ecosystem climate d. climate biome

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )